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Grok 4.20 0309 vs Step3 VL 10B

xAI vs StepFun — benchmarks, pricing, and capabilities side by side.

  • Grok 4.20 0309 has the higher intelligence index (88.5 vs 69)
  • Step3 VL 10B is cheaper ($0.00 vs $2.00 per 1M input)
Grok 4.20 0309Step3 VL 10B
Intelligence index88.569
DeveloperxAIStepFun
TypeLLMLLM
Access
Context window
Input price$2.00 / 1M$0.00 / 1M
Output price$6.00 / 1M$0.00 / 1M
Speed97 tok/s
ReleasedMarch 10, 2026January 20, 2026
Parameters
Input modalities
Output modalities

Shared benchmarks

Grok 4.20 0309
Step3 VL 10B
GPQA Diamond
88.5
69
Humanity’s Last Exam
30
10.2